Calendar



J. GRANTHAM I Oct. 25, 1938.

GALENDAR 2 shees-shet 1 Filed Jan. 31, 1936 W INVEN OR.

ATT RNEYS.

J. GRANTHAM Oct. 25, 1938.

CALENDAR Filed Jan. 31, 1936 2 Sheets-Sheet 2 A'ITO EYS.

Patented Oct. 25, 1938 CALENDAR James Grantham, Evanston, Ill., assignor of onethird to John F. Alexander and one-third to Harry A. Newby, Chicago, Ill.

Application January 31, 1936, Serial No. 61,770

8 Claims.

This invention relates in general to calendars, and more particularly to a device for selectively displaying the days of any desired month of any desired year.

Aiprincipal object of the invention is the provision of a perpetual calender comprising a plurality of elements selectively operable relatively to each other in accordance with suitable indications thereonlto display a desired year, month, and days of that particular month tabulated according to the days of the week.

Another important object of the invention is the provision of such a calendar which may be easily and cheaply constructed from cardboard, 15 sheet metal, or the like, since it comprises a plurality of superimposed sheets, each of which necessitates only a Cutting or stamping operation and a printing or marking operation.

Numerous other objects and advantages of the invention will be apparent as it is better understood from the following description, which, when taken in connection with the accompanying drawings, discloses a preferred embodiment thereof.

Inthe drawings,

Fgure l is a front elevational view of a calendar embodying the features of the invention;

Fig. 2 is a rear view of the calendar of Fig.1;

Fig. 3 is a view similar to Fig. 1 with the front cover removed;

Fig. 4 is a view similar to Fig. 3 with the front shutter removed;

Fig. 5 is view similar to Fig. 4 with the front indicating disk thereof removed and parts broken away;

Fig. 6 is view similar to Fig. 5 with the front panel thereof removed;

Fig. 7 is a rear view of the indicating disk of Fig. 6;

A Fig. 8 is a Vertical sectional view taken Substantially on the line 8-8 of Fig. 1; and

Fig. 9 is a detail horizontal sectional view through a part of the shutter, disk and panel shown in Figs. 3, 4 and 5, respectively. 45 Referring more particularly to the drawings,

reference numeral indicates in general a perpetual calendar having a front cover |2 and a rear cover |3. The front cover |2 comprises an outer portion |4 (Fig. 8) having marginal fianges |5 extending rearwardly therefrom and adapted to be secured in any desired manner to the rear cover |3. Secured to or formed integral with the rear side of the front cover |2 is a marginal portion E6 which provides a circular recess in the rear surface of the front cover. The rear cover member |3 is provided with a circular recess |8 in its front surface which is co-axial with the recess l'l.

Rotatably mounted on a rivet or bearing member |9, which is secured to the rear cover |3 coaxial with the reoesses |8 and (Fig. 8), are a shutter member 2| (Fig. 3), and front and rear indicating disks 22 and 23,- respectively (Figs. 4 and 6). The shutter 2| and disk 22 are housed and freely movable within the recess while the disk 23 is similarly housed within the recess |8 to prevent binding and permit free rotation thereof. A panel or Separator 24 (Figs. 5 and 8) having a peripheral shape similar to the cover members |2 and l3 is non-rotatably mounted betwee the indicating disks 22 and 23. The upper part of the front cover |2 is provided with an arcuate aperture' or window 25 (Fig. 1), and the lower part of the cover is cut away along an inner arc and. a pair of radii to provide an aperture or window 25 which has the same angular width as the window 25. Directly above the window 26 the front cover |2 is provided with a smaller arcuate aperture or window 27. The front cover |2 is also lprovided above and adjacent the upper edge of the window 25 with spaced designations 28 of the daysl of the week.

When the several parts of the calendar are properly assembled, as shown in Figs. 1, 2 and 8, a limited portion of the front surface of the indicating disk 22 and a portion of the upper part of the shutter 2l` are visible through'the aperture or window 25. By rotating the disk 22 and shutter 2| relative to the cover |2 in a lmanner to be later more fully explained, twentyeight, twenty-nine,V thirty, or thirty-one numerals 29, which are inscribed upon the front surface of the disk 22 in arcuate rows and radially spaced groups, as shown in Fig. 4, will be visible through the window 25. The numerals 29 are so spaced and the window is of such a size that, except for the shutter 2|, six arcuate rows and seven radial groups of the numerals 29 may be seen through the window.

As shown in Fig. 3, the upper half of the shutter 2| is cut away along radial lines 3| and 32 and concentric arcs 33, 34 and 35. These arcs 33, 34 and 35 are spaced radially from each'other a distance substantially equal to the height of the numerals ;29 on the indicating disk 22,and described an angle substantially equal to that which includes four, seven and six radial groups of the numerals 29, respectively. Z i

The bottom part of the shutter 2| is provided with a protruding marginal portion 36 which extends beyond the indicating disk 22 (Fig. 3) and has a plurality of teeth 3`| to facilitate independent rotation of the shutter relative to the other parts of the calendar. Above and adjacent the protruding portion 35, the shutter 2| is provided with five angularly spaced, circular apertures 38, i

distance equal to that between the center lines of the radial groups of numerals 29 on the disk 22.

Above these circular apertures, the shutter 2| is provided with five arcuate apertures or windows 44, 45, 45, 41 and 48, each of which defines a ring having the pivot point of the shutter as a center,

which rings are concentric and successively adjacent each other. 41 and 48 subtends an adjacent angle which is equal to the angle defining each of the radial groups of numerals 29 on the disk 22. The window 44, however, subtends an angle of twice the magnitude of those defining the windows 45 to 48.

The circular aperture 38 and the window 46 have the same radial center line, and the apertures 39 and 48; 4| and 45; and 42 and 41 are similarly paired. The window 44, on the other hand, is angularly coincident with the two circular apertures 42 and 43. The shutter 2| is also provided with an arcuate aperture or window 49 which is similar in all respects to the window 41 except that it is angularly spaced to the right thereo'f, the angular distance between the adjacent ends of the two windows being six times the width of one of them. Above the windows 44 to 48, the shutter 2| is also provided With an elongated arcuate sight opening or window 5|, for a purpose to be later described.

Referring now to Fig. 4, the lower part of the indicating disk 22 is provided with an elongated arcuate sight opening or window 52 similar to the window 5| in the shutter 2|, but of shorter angular length than the latter, the window 52 being directlyV behind the window 5| at all times when the parts are in assembled position. Below the window 52, the disk 22 is provided with a substantially segmental-shaped aperture or window 53 having the same angular width as the windows 45 to 49, and the center line of which is the diameter which comprises the center line of the middle radial group of numerals 29. The window 53 is of such length radially of the disk 22 that rotation of the shutter 2| relative to the disk will bring any desired one of the windows 44 to 48 in register therewith.

On its left side at a radial distance from the bearing member |9 equal to that of the window 41, the window 53 is provided with an arcuate extension 54 of the same size as the window 41. The disk 22 is also provided with another arcuate aperture or window 55 which is so positioned as to coincide with the window 49 in the shutter 2| when the Windows 54 and 41 coincide.

VAdjacent its lower marginal edge, the disk 22 is provided with a circular aperture 56 of substantially the same diameter as the apertures 38 to 43 in the shuter 2|, and having its center defined by the radial center line of the window 53 and an arc of the same radius from the center of the bearing |9 as that passing through the centers of the apertures 38 to 43. Four circular indicating marks 51 are inscribed on the disk 22 on each side of the aperture 56, with their centers falling respectively on the arc defining the center of the aperture 56 and adjacent radii spaced successively from each other the same angular distance as that between the radial center lines of the apertures 38 to 43.

As a means of limiting the relative rotational movement of the shutter 2| and disk 22, the latter is provided with. two radially disposed slots 58 adjacent the'radial edges of the group of numerals 29 thereon (Figs..3, 4 and 9). At each of its radial edges 3|: and 32, the shutter 2| has a depressed tabv 59 extending rearwardly from Each of the windows 45, 46,

the rear surface of the shutter, which is adapted to engage the upper edge of its associated slot 58.

Referring to Figs. 5 and 9, the panel or separator 24 is provided with a pair of forwardly extending tabs 6|, each of which is adapted to be contacted by the upper edge of its associated slot 58 to limit rotation of the indicating disk 22 relative to the Separator 24. The Separator 24 is also provided with an arcuate slot or window 62 which is positioned directly behind the windows 52 and 5| (Fig. 8). To the left of the Window 62, the Separator 24 may have inscribed thereon a numeral, shown in Fig. 8 as |9, representing the first two digits of theyear or the century designation and adapted to be seen through the windows 21, 5| and 52. The lower part of the Separator 24 is cut away to provide an aperture or window 83 which coincides with the aperture 26 in the front cover |2 when the parts of the calendar are properly assembled.

The periphery of the rear indicating disk 23 is cut away to provide a. plurality of equally spaced teeth 66, shown in the instant embodiment as thirty-five in number, to facilitate rotation of the disk about the bearing member |9. Each group of seven adjacent teeth 68 defines a segmental area on the front face of the disk 23 upon which are inscribed the names of the months of the year in the following arrangement.

Referring to Fig. 6, the name of each month,

or its abbreviation, is given the same angular space as a tooth 66, which is also equal to the angular length of each of the windows 45 to 49 in the shutter 2|. The names of the months are also arranged in five concentric arcs which are visible only through the window 44 in the shutter 2| and its related portion of the window 53 of the indicator disk 22.

' In the next adjacent larc inwardly, appear the designations Nov., Apr., Sept. and June, with Nov.

'in radial alinement with Mar., Apr. with July f Sept. with Dec., and June in the space between Dec. and Mar. of the next group. These designations coincde with and are visible only through the window 45.

Feb. appears directly above Nov. in the next adjacent are, -and also in the innermost arc in radial alinement with Aug. These two designations of Feb. can be seen through the windows 46 and 48, respectively, and 53. The arc between these two contains the abbreviation Jan. in radial alinement with Oct., and this can be seen through the windows 41 and 53 or 54, or 49 and-55. i

-On its Vrear surface, the indicating disk 23 has Vthe numerals to 99" inscribed in the manner shown in Fig. 7. These represent the units 'and tens digits of any year, and are arranged in four concentric rings, and seven groups of four radiallyi disposed columns'each. Each radial column uses a segmental space defined by a tooth 66, and a similar space is provided between each 'ofthe seven groups.

These numerals are arranged in succession in a clockwise direction, starting with 00" in the right-hand .or counterclockwise column of a similarly arranged on the forward surface of the disk 23 so as to be visible through the windows 21, 52 and 62, as shown in Fig. 6. Since it is proposed to operate the disk 23 from the rear of the calendar, however, this arrangement is not essential.

In order to rotate the indicating disk 23, an arcuate aperture S1 (Figs. 2, 5, 6 and 8) is provided in the rear cover |3 which gives access to certain of the peripheral teeth 66. At its center, the upper edge of the aperture 61 isfurther recessed to provide a notch 68 as a means for properly alining or centering the disk 22 in a desired position, as shown in Fig. 2.

The cover |3 is also provided With a plurality of radially disposed apertures or windows 69 which are angularly spaced from each other the same distance as corresponding radial columns of the numerals in adjacent groups on the rear of the disk 23. Adjacent and to the left, or counterclockwise of each of the windows 69 is a radial column of numerals 1| inscribed upon the cover |3 and comprising the first two digits of the particular years to which that column and its associated window 69 relate.

In Fig. 2 only three of these Windows 59 and columns of numerals 7| are shown, and these three relate to the years 1756 to 1855, 1856 to 1955, and 1956 to 1999, respectively. By multiplying the windows 69, however, it will be apparent that provision may be made for selecting any desired year, upon moving the disk 23 to bring the proper numerals thereon in alinen'ient with the selected numeral 1| and window 59.

Having made this selection of the desired year, as for example 1935, it will be visible from the front of the calendar (Fig. 1) through the Window 21, if such be provided. The first twodigits of this year designation are shown herein as being inscribed on the Separator 24 and the last two on the forward face of the disk 23. If it should be desired, the year designation which is thus visible from the front of the calendar may be omitted, since it is visible at the rear of the calendar, as shown in Fig. 2. In order to select the desired month, the shutter 2| is moved relative to the indicating disk 22 by means of the teeth 31 to bring the desired aperture 38, 39, 4|, 42 or 43 in the shutter in register with the aperture 59 in the disk. Then, by inserting the finger, a pencil, or the like, through these alined apertures, the disk 22 and shutter 2| are moved together relative to the indieating disk 23 to show the desired month through the related window 44 to 49 and 53 to 55.

The result of these movements of the members 23, 2| and 22 is to display not only the desired year and month, but also the days of the month in the window 25 in proper arrangement of days of the week.

The shutter 2| is moved relative to the disk 22, as above described, to bring either of the aper- I of numerals 29 on the disk 22. If the leap year aperture 39 is used, however, the numeral twentynine of the numerals 29 will be visible.A

Likewise, movement of the shutter 2| to bring the aperture 4| in register With the aperture 56 will move the upper arcuate portions 34 and 35 to cover 'the numeral thirty-one of the group 29. This aperture 4| is used when one of the months having thirty days,.i. e. April, June, September -or November, is selected. Such operation also resultsin the alinement of the windows 45 and 53.

If one of the months having thirty-one days is selected, i. e., January, March, May, July, August, October or December, the aperture 42 is 'normally alined with the aperture 55, or, if it is a leap year, the aperture 43 is used. The former results in the alinement of the windows 44 and 41 with the window 53, and the later in the alinement of the windows 44 and 53,41 and 54, and 49 and 55-. Such movements of the shutter 2| relative to the disk 22 also results in all of the numerals 29 being free to bemoved so as to be visible through the window 25.

In order to facilitate the proper selection of the desired month, Feb.?is inscribed on the shutter 2| between the apertures 38 and 39, Apr., June, Sept. and Nov. around the aperture 4|, and Jan., Mar., May, July, Aug., Oct. and Dee. between the apertures 42 and 43. In addition, the apertures 39 and 43 are surrounded by 'a red, or other distinguishing color, ring to indicate their use for a leap year. The numerals for the digits and ten's of each' leap year on the disk 23 are also' colored red, or whatever other distinguishing color is desired. 2

When any one of the apertures 38 to 43 is in register with the aperture 56, an indicating mark 51 will be visible through each of the'others of these apertures. By providing a small arrow in each of the marks 51' painting towards the aperture 56, as shown in Fig. 4, they proper direction for moving the shutter 2| relative to the disk 22 to bring a desired aperture 38 to 43 in register with the aperture 56 will be clearly indicated.

Having moved the shutter 2| relative to |the disk 22, as above described, the two are moved together relative to the rest of the calendar until the desired month appears through the selected one of the windows 44 to 49. This movement will result in the lnumerals 29, whichV are not vcovered erly positioned in the window 25 to coincide with the correct day of the week designations 28.

It will be noted from Figs. 1 and 8 that the bearing member or rivet |9 does not extend through the front cover |2.7 The purpose of this construction is to facilitate the manufacture of the rest of the calendar in large quantities and the assembling thereon of front covers having the same structural characteristics, but having different print-ed matter on their outer surfaces for advertising purposes and the like. If it is desired, however, the 'rivet |9 may be extended through the front cover 2. Suitable apertures by the upper part of the shutter 2|,being propmay also be provided in the members 12, 24 and |3 adjacent their upper edges through which may be strung a supportin-gmember or chain 12 (Figs. 1 and 2).

It is tho-ught that the invention and many of its attendant advantages will be understood from the foregoing description, and it will be apparent that various changes may be made in the form, construction and arrangement of the parts without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the form hereinbefore described being merely a preferred embodiment thereof.

I claim:

1. A calendar, comprising a hacking support having a plurality of apertures therein, an indicating disk rotatably mounted on said hacking support and having indicia on each surface thereof representing divisions of time, a second indicating disk rotatably mounted on said hacking.

support and having indicia on its front surface 'representing days of the month and having: a plurality of apertures therein, a shutter rotatably mounted on said hacking support and having a plurality of apertures therein for cooperating with the apertures in said second disk for displaying selected indicia'on the front surface of said first'disk, and a cover secured to said hacking support and having a plurality of apertures therein, said first disk being selectively movable relative to' said hacking support to register adesired year With one of said apertures therein, said shutter being movable relative to said second disk to uncover only certain of said days of the month thereon, and said shutter and second disk being movable in upison relative to' said first disk and said cover to display a selected month through the apertures therein, and to position said days of the month in one of the apertures in said cover properly referred to days of the week for that particular month.

2. A calendar, comprising a hacking support, a plurality of members rotatably mounted on said hacking support, a stationary spacing member mounted between and in contact With two of said rotatable members, and means associated with said stationary member and the rotatable member on 'one side thereof for limiting movement of the latter relative to the stationary member, the rotatable member on the other side of said stationary member having unlimited rotation relative thereto.

3. A calendar, comprising a plurality of members mounted for rotational movement relative to each other, one of said members having a pair of arcuately spaced radial slots, and the others of said members each having a pair of tabs positioned within the outer edge thereof and projecting out of the Vplane 'of their respective member so as to engage said slots to limit the relative rotational movements of said members.

4. A perpetual calendar, comprising a supporting member, a disk rotatably mounted on said member and selectively movable according to year designating indicia thereon to correctly position month designating indicia carried thereby, a second disk having indicia representing days of the month mounted for rotation relative to said member and having apertures through which the month and year indicia on ,said first disk are visible, and a shutter rotatably mounted on said member and having apertures alineable with the apertures in said secondvdisk to display-a selected month indicia and having means co-operating with said second disk to automatically uncover only the correct number of days of the month indicia for any such selected month.

5. A calendar, comprising a hacking support having a plurality Vof apertures therein, an indicating disk rotatably mounted on said hacking support and having indicia on each surface thereof representing divisions of time, a second indicating disk rotatahly mounted on said hacking support and having indicia on its front surface representing days of the month and having a plurality of apertures therein, a shutter rotatably mounted on said hacking support and having a plurality of apertures therein for co-operating with the apertures in said second disk for displaying selected indicia on the front surface of said first disk, and a cover secured to said backing support and having a plurality of apertures therein for displaying the selected indicia on said first disk and for displaying certain indicia on said second disk in accordance With such selection.

6. In a calendar, a movable indicating disk having indicia thereon representing divisions of time, an aperture therein to facilitate movement thereof and direction of movement indicating indicia associated With said aperture, and a shutter member mounted for movement relative to said indicating disk for uncovering certain of said divisions of time indicia thereon and having a plurality of apertures adapted to coincide with the aperture in said disk and the direction of movement indicating indicia thereon and indicia representing divisions of time associated with said apertures, whereby said shutter may be selectively moved relative to and in unison with said indicating disk.

7. In a calendar, a hacking support, an indicating disk pivotally mounted' on said support and having indicia thereon representing divisions of time, an aperture therein to facilitate rotation thereof and direction of movement indicating indicia associated with said aperture, and a shutter member pivotally mounted on said support for rotation relative to said indicating disk to uncover certain of said divisions of time indicia thereon and having a plurality of apertures adapted to coincide with the aperture in said disk and the direction of movement indicating indicia thereon and indicia representing divisions of time associated with said apertures, whereby said shutter may be selectively rotated relative to said indicating disk and in unison with said indicating disk relative to said hacking support.

8. In a calendar, a movable indicating disk having indicia Vthereon representing divisions of time, an aperture therein to facilitate movement thereof and direction of movement indicating indicia associated with said aperture, a shutter member mounted for movement relative to said indicating disk for uncovering certain of said divisionsof time indicia thereon and havinga plurality of apertures adapted to coincide with the aperture Vin said disk and the direction of movement indicating indicia thereon and indicia representing divisions of time associated' with said apertures, and means 'on said shutter for moving the same relative to said indicating disk to position a selected one' of the apertures in said shutter in coincidence with the aperture in said disk, whereby said shutter and said disk may be subsequently selectively moved in unison.

i JAMES GRANTHAM. 

